Drier



Jul 20, 1926.

R. F. KNIGHT brawn Filed April 4. 1923 10 which t i 15 further in the Patented July 20,1926.

UNITED STATES PATENT OFFICE.

RALPH F. KNIGHT, OI BEVERLY, HASSACHUSETTQ,

a'ssiimon re umnnsnon monnmmr coaro'narron, or rarnnson, NEW man a 'conroaar'rox on NEW mnsny.

Damn.

Application filed April 4, 192a. Serial no. aaaam.

This invention relates to apparatus for treating solids with fluids and is herein disclosed as embodied in a drier built for the purpose of drying sheet metal plates such l as are used in the manufacture of tacks and nails.

Cut nails and tacks ai'e ordinarily manufactured from sheet metal plates which before the are cut up into the strips In li e tacks ornails are formed, are pickled in an acid bath, then rinsed and dipped in a bath of milk of lime. plates, upon removal from the milk of lime ath, must be dried before they pass any process. The plates at this stage are ordinarily handled in racks containing some or plates and it is impractical to remove them from these racks until after they are dried. Moreove'r, nail manufacturers consider it desirable that the plates should dry with a thin coating'of lime on them as it is generally believed that this tends to prevent the blunting of the knives used to shear the plates into-strips.

It is an object of the present invention to provide an efiective drying apparatus suit:

able for this character of work which will occupy a small space, will be efiective, and

e at the same time inexpensive to manufacture and operate. With these objects in view the illustrated constructioncomprises a series of chambers each having a door through which racksof plates can be introduced, and a pair of dampers controlling correspondin ports between each chamber and a conduit t rough which hot air is forced, so arranged that when the ports are opened the hot air asses into and through the chamber and bac into the conduit, while, when the ports are closed, the air passes through the conduit without entering the chamber. The door and dampers of each chamber are interconnected so that as the door is opened to permit the introduction of a rack of plates the orts are closed, while when the door is c osed the ports are opened so that the air passes from the conduit through the chamber and then back into the conduit through which it continues on its way to a succeeding chamber. After the air has passed beyond the chambers it may be-discharged from the conduit either into the building in which the drier is located. to assist in warming the building, as

The

opened for t in the winter, or out of doors, as. is preferable in the summer.

While the invention is illustrated as em bodied in a drier, it should be understood that it is not limited'thereto, since in various of its aspets it clearl has other utility.

With the above and other objects in view the invention be described in. connection with the accompanying drawings and pointed out in the claims.

In the drawings Figure 1 isa perspective view of a drier constructed with the present in accordance invention, certain parts being shown m section in order more clearly to disclose the invention;

.Fig. 2 is a longitudinal section of the drier of Fig. 1;

' Fig. 3-1s a perspective view, partly broken away, showing the connections between the door and dampers of one of the drier chambers.

tackle 18 from the hoist 20 of a crane 22 traveling on Fig 1). Spacers 26 may conveniently be us to provide an appropriate air space between adjacent plates. a

The drier 28 is illustrated as made up of three chambers 30, each having a door .32 hinged to its top and a pair of ports'in its bottom communicating with a conduit 38 through which hot air is forced by :1 pump consisting, for example, of a fan as illustrated diagrammatically at 40. The ports are controlled by dampers 34 and 36 illustrated as swinging gates mounted upon rock shafts 42 and 44, respectively. Rock shaft 42 terminates in a rock arm 46, while rock shaft 44 terminates in a rock arm 48. From the ends of the arms 48 and 46 of the dam ers of each chamber is suspended a weigiit 50 hea enough to hold the dampers closed. The en of the arms-46 and 48 of the dampers of each chamber are connected also as indicated at 52 to an extension 54 formed on the rear of the door of that chamber, the arrangement being such that as the door is he removal or insertion of a rack of plates the dampers will be closed so hers it may be closed and the air pa the hot air to .ter s Patent of the the conduit, and means chambers, a

that the hot air will pass through the conduit without entering that chamber, as indicated at 56 (Fig. 2), connecting in series such of the chamber! as have theirtports open, .while when the door is closed e dampers willbeo edbyweightfiosoastocause as from the conduit into and through the amber and back into the conduit, as indicated at 58. Stops 60 are providied to limit the opening of dampers 34 an 36.

After the air has passed the drying chamdischarged from the conduit through a port 62 to exist in warming the buildmg'in the winter, or that port may be ssed through a continuation of the 'conduit and discharged out. of doors.

- Having fully described my invention, what I claim as new and desire to secure by Let- Unitcd States is:-

1. Apparatus for treating solid material having, in combination, a series of chambers, a con nit communicating with the chambers, means for forcing a hard time h for controlling t e passage of the fluid from the conduit at will through any or all of thedifierent chambers in series. i

2. Apparatus for treating solid ,materlal having, in combination, a series of chamhers, a conduit communicating with the fan for forcing air through the conduit, and independent means for conlli the passe of air from the conduit through any or a of the difierent chambers in series.

3. Apparatus for. treating material hav ing, in combination, a series of chambers, a conduit, and a pump for fore it flilld tbrou h the conduit, eachcham r being prcivi ed with means to control the passage of fluid from the chamber and from the chamber back to the conduit constructed and arranged to connect in series any or all of the chambers as may be desired.

4. Apparatus for treating material having, in combination, a series of ehambers, a conduit, and a pump for forcing fluid through -the conduit each chamber being rovided with a pair of ports and damlpers in the ports to control the passage of uid from the conduit to the respective chamber and from the chamber back to the conduit constructed and arranged to connect in series such of the chambers as have their ports open.

5. A receptacle for treating material having a door through which material to be treated may be introduced, a port to permit the entrance of fluid material, a damper ar ranged to open or close the port, connectionsbetween the door and the dam r arranged so that as the door is closed t e port conduit to the respective escapee is osened and as the door is opened the port 18 used, and means for forcing a stream of fluid through the ggen port.

6. A amber havin means for supplying a chamber, a p urality with a damper arranged to control the passage of the drying her, and connections from the door to the damper so. that -as the. door is opened the dampers are closed and as the door is closed the dampem are opened.

7. A drier having, in combination, a source of hot air, a receptacle having a plurality of ports communicating with the source of hot air and a door, a dam r for each port and connections between t e door and the dampers arranged to. cause the dampers to be closed so as to shut ofi the entrance of hot air into the receptacle when the door of the receptacle is opened.

, 3. drier hav ng, in combination, a source of hot air, a receptacle having a pair of ports communicatin with the source of hot air and-a door, a amper for each port and connectihns between the door and the dampers arranged to cause the ;dam rs. to 010 so as to shut off the entrance of ot air into he receptacle when the door of the receptacle is opened and to cause the dampers to open so as to permit the entrance of hot a door, m 'umtothe air into the receptacle and its egress from the receptacle when the door is closed.

9. A drier. comprising a receptacle, 9. conduit arranged to supply a d medium to the receptacle, a port having a amper controllin .the assage of the drying medium from t e con uit to the receptacle, means for opening and closin the damper, and a stop arranged to limit t e opening movement of the dam er.

10. A 'er comprising a receptacle, a conduit arranged to supply a drying medium to the receptacle, a pair of dampers controlling the passage of the drying medium from the conduit to receptacle back to, the conduit, means for opening and closin the dampers, and a stop positioned in the conduit to limit the 'opening movement of each damper.

11. A drier comprising a series of receptacles cash provided with a door, means for supplying hot air to the receptacles, a series of ports for the receptacles each provided with a dam r, and connections from the door to the ampers of each. receptacle operating the dampers to supply hot air to each receptacle when its door is terrupt the supply of hot air to each receptacle. when its door is open.

12. A drier comprising a conduit, a plurality of receptacles each having a ort communicating with the conduit an a door, and a damper for each port, the door and the damper of each receptacle being connectof each provided.

medium into the chain lltl the receptacle and from the Ill closed and to ined so that as the door is opened the port communicating with the conduit is closed and as the door is closed the port is opened.

13. A drier comprising a conduit, a plurality of receptacles having a pair of ports communicating with the conduit, a damper for each port and a door, the door and the dampers of each receptacle being connected so that as the door is openedthe ports communicating with the conduit are'closed and as the door is closed the ports are opened.

14. A drying apparatus comprising a series of receptacles, a conduit for supplying a drying medium to the receptacles, ports each provided with a damper between the conduit and the receptacles arranged to control the assage of the drying medium from the coxidiiit to the receptacles and from the receptacles back to the conduit, the ports and dampers being arranged so that the drying medium may pass through any or all of the receptacles in series as may be desired.

.15. A drying apparatus comprising a series of receptacles, a conduit for supplying a drying medium to the receptacles, ports each provided with a damper between the conduit and the receptacles arranged to control the passage of the drying medium from the conduit to the receptacles and from the receptacles hack to the conduit, the ports and dampers being arran ed so that the drying medium may pass through any or all of the receptacles in series, as may be desired, and means for controlling the passage of the spent drying medium from the conduit.

16. Drying apparatus comprising a group of receptacles, a hinged door in the top of each receptacle, a crane for lowering a load into or raising a load out of any of the receptacles when the door of that receptacle is open, and means for passing a drying medium through the receptacles.

17. Drying apparatus comprising a group of receptacles, a hinged door in the top of each receptacle, a track above the receptacles, a trolley on the track provided with means for lowering-a load into or raising a load out of any of thereceptacles when the door is open, and means for passing a drying medium through the receptacles.

18. A receptacle having a door in. its top and a port provided with a damper in its bottom, and gravity-operated means for closing the damper as the door is opened.

19. A drying chamber having a door, a pair of ports spaced from one another, a damper for each port and connections from the door to the dampers so that as the door is opened the orts are closed and as the door is closed t e dampers are opened.

20. A receptacle for treating material having a. door through which material to be treated may be introduced, a port to permit the entrance of fluid material, a damper for the port and connections between the door and the damper arranged so that as the door is closed the damper is opened and as the door is opened the damper is closed.

21. A receptacle provided with a door and a port, a damper for the port, a lever connected to the door, a lever connected to the damper, and connections between the levers so that as the door is opened the damper is closed and as the door is closed the damper is opened.

22. A receptacle having a hinged door and a pair of ports, a hinged damper for each port, a lever connected to the door, a lever connected to each damper, and connections between the levers so that as the door is opened the dampers are closed and as the door is closed the dampers are opened.

23. A receptacle provided with a door and a port, a damper for the port, a. lever con nected to the door, a lever connected 'to the damper, a weight suspended from one of the levers, and a connection between the levers so that as the door is opened the damper is closed and as the door is closed the damper is opened.

24. A receptacle having a hinged door in its top and a port having a hinged damper in its bottom, a lever connected to the door, a lever connected to the damper, a weight suspended from the last named lever, and a connection between the levers so that as the door is opened the weight causes the damper to close and as the door is closed the damper is opened against the resistance of the weight.

In testimony whereof I have signed my name to this specification.

RALPH F. KNIGHT.

ed so that as the door is opened the port communicating with the conduit is closed and as the door is closed the port is opened.

13. A drier comprising a conduit, a plurality of receptacles having a pair of ports communicating with the conduit, a damper for each port and a door, the door and the dampers of each receptacle being connected so that as the door is opened the ports communicating with the conduit are closed and as the door is closed the ports are opened.

14. A drying apparatus comprising a series of receptacles, a conduit for supplying a drying medium to the receptacles, ports each provided with a damper between the conduit and the receptacles arranged to control the assage of the drying medium from the con uit to the receptacles and from the receptacles back to the conduit, the ports and dampers being arranged so that the drying medium may pass through any or all of the receptacles in series as may be desired.

.15. A drying apparatus comprising a series of receptacles, a conduit for supplying a drying medium to the receptacles, ports each provided with a damper between the conduit and the receptacles arranged to control the passage of the drying medium from the conduit to the receptacles and from the receptacles back to the conduit, the ports and dampers being arran ed so that the drying medium may pass through any or all of the receptacles in series, as may be desired, and means for controlling the passage of the spent drying medium from the conduit.

16. Drying apparatus comprising a group of receptacles, a hinged door in the top of each receptacle, a crane for lowering a load into or raising a load out of any of the receptacles when the door of that receptacle is open, and means for passing a drying medium through the receptacles.

17. Drying apparatus comprising a group of receptacles, a hinged door in the top of each receptacle, a track above the receptacles, a trolley on the track provided with means for loweringa load into or raising a load out of any of thereceptacles when the door is open, and means for passing a drying medium through the receptacles.

18. A receptacle having a door in its top and a port provided with a damper in its bottom, and gravity-operated means for closing the damper as the door is opened.

19. A drying chamber having a door, a. pair of ports spaced from one another, a damper for each port and connections iron. the door to the dampers so that as the door is opened the ports are closed and as the door is closed the dampers are opened.

20. A receptacle for treating material having a door through which material to be treated may be introduced, a port to permit the entrance of fluid material, a damper for the port and connections between the door and the damper arranged so that as the door is closed the damper is opened and as the door is opened the damper is closed.

21. A receptacle provided with a door and a port, a damper for the port, a lever connected to the door, a lever connected to the damper, and connections between the levers so that as the door is opened the damper is closed and as the door is closed the damper is opened.

22. A receptacle having a hinged door and a pair of ports, a hinged damper for each port, a lever connected to the door, a lever connected to each damper, and connections between the levers so that as the door is opened the dampers are closed and as the door is closed the dampers are opened.

23. A receptacle provided with a door and a port, a damper for the port, a. lever connected to the door, a lever connected 'to the damper, a weight suspended from one of the levers, and a connection between the levers so that as the door is opened the damper is closed and as the door is closed the damper is opened.

24. A receptacle having a hinged door in its top and a port having a hinged damper in its bottom, a lever connected to the door, a lever connected to the damper, a weight suspended from the last named lever, and a connection between the levers so that as the door is opened the weight causes the damper to close and as the door is closed the damper is opened against the resistance of the weight.

In testimony whereof I have signed my name to this specification.

RALPH F. KNIGHT.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,592,946, upon the application of Ralph F. Knight, of Beverly,

granted Jul 20, 1926, Massachusetts, or an improvement 1n Driers, errors appear in the printed specification requirin correction as follows: Page 2 line 36, claim 2, before the word through insert t e words at'will, and line 75, claim 6, for the word damper read dampers; page 3. line 18,

claim 14, for the word receptacles read rec-e male, and line 59, claim 19, for the word "ports read dampers; and that the sai Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 14th day of December, A. D. 1926.

M. J. MOORE, Acting Commissioner of Patent.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,592,946, granted Jul 20, 1926, upon the application of Ralph F. Knight, of Beverly, Massachusetts, or an improvement. 1n Driers, errors appear in the printed specification requiring correction as follows: Page 2, line 36, claim 2, before the word through insert the words at will, and line 75, claim 6, for the word damper rend dampers; page 3. line 18, claim 14, for the word receptacles read rece Male, and line 59, claim 19. for the word ports read dampers; and that. the sai Letters Patent should be read with theae corrections therein that the. same may conform to the record of the ease in the Patent Office.

Signed and sealed this 14th day of December, A. D. 1926.

[m] M. J. MOORE,

Acting Commissioner of Patents. 

